Power supply system

ABSTRACT

Disclosed is a power supply system, including: a high-voltage input power distribution cabinet, a high-low voltage conversion cabinet, and a low-voltage output and control cabinet, the high-low voltage conversion cabinet is provided with at least one high-voltage chamber provided with a high-voltage bus bar, at least one low-voltage chamber provided with a low-voltage bus bar, an insulating partition between the high-voltage chamber and the low-voltage chamber and a plurality of power supply modules; each of the power supply modules bridges the high-voltage and low-voltage chambers and includes a high-voltage cavity, a low-voltage cavity and an isolation unit, connecting terminals of the high-voltage and low-voltage cavities are respectively disposed corresponding to the high-voltage and low-voltage chambers and electrically connected to the high-voltage and low-voltage bus bars respectively, and the isolation unit is connected to one end of the high-voltage cavity and one end of the low-voltage cavity.

CROSS REFERENCE

This application is a CIP of U.S. application Ser. No. 16/423,421, whichis based upon and claims priority to Chinese Patent Application No.201811001308.2, filed on Aug. 30, 2018, the entire contents thereof areincorporated herein by reference.

TECHNICAL FIELD

The disclosure relates to the technical field of power electronics, andmore particularly, to a power supply system.

BACKGROUND

Datacenter, also known as a server center, refers to facilities used tohouse computer systems and related components, such as telecommunicationand storage systems. It typically includes redundant and backup powersupplies, redundant data communication connections, environmentalcontrols (such as air conditioners, fire extinguishers) and varioussafety devices.

At present, the amount of data has exploded, the value of data has risensharply, cloud computing has developed rapidly, and the scale ofdatacenters has maintained a rapid growth trend in recent years. In thecontext of rapid growth of the power consumption of the datacenters, itis urgent to reduce power transmission losses and optimize power supplymanners in the datacenter.

The power supply technology requirements for application environmentssuch as the datacenters are as follows:

(1) The diversity of input and output voltages of the system requiresflexible combination of system structures to meet different voltageinput and voltage output.

(2) For the needs of system architecture diversity, a modular structureis required to achieve different architectural requirements.

(3) For the safety requirements of power supply products, the isolationbetween high voltage and low voltage is required, so as to preventhigh-voltage parts from being connected in series to the low-voltagecircuit during on-line maintenance to cause personal injury tomaintenance operators.

(4) Under the trend of continuous increase of the voltage level, thesize of the medium-voltage power supply system will become larger andlarger, a structure capable of reducing a creepage distance andclearance, having a small number of parts, and having a small systemsize and a light weight becomes necessary.

In the related art, the basic technical features of the existingsolutions are: (1) single-phase power supply modules are connected inseries; (2) all power supply modules are placed in one box; (3) there isno isolation structure of high voltage/low voltage in the cabinet body.

The shortcomings of this scheme are: (1) it cannot flexibly correspondto different input and output voltages; (2) it cannot flexiblycorrespond to different system architectures; (3) it cannot guaranteesafety during live maintenance.

Therefore, in order to solve one or more of the above problems, a newpower supply system solution is needed to flexibly isolate the high andlow voltages and be suitable for a multi-power supply module system.

The above information disclosed in the background section is only forenhancement of understanding of the background of the presentdisclosure, and thus it may include information that does not constitutethe prior art known to those of ordinary skill in the art.

SUMMARY

The aspects of the present disclosure may provide a power supply systemthat overcomes, at least to some extent, one or more problems due tolimitations and disadvantages of the related art.

Other characteristics and advantages of the present disclosure will beapparent from the following detailed description or be learned in partby practicing the present disclosure.

According to an exemplary embodiment of the present disclosure, there isprovided a power supply system, including: a high-voltage input powerdistribution cabinet, a high-low voltage conversion cabinet, and alow-voltage output and control cabinet, wherein,

the high-low voltage conversion cabinet is provided with at least onehigh-voltage chamber and at least one low-voltage chamber, the high-lowvoltage conversion cabinet is further provided with an insulatingpartition between the high-voltage chamber and the low-voltage chamber,the low-voltage chamber provided with a low-voltage bus bar, and thehigh-voltage chamber is provided with a high-voltage bus bar;

the high-low voltage conversion cabinet is further provided with aplurality of power supply modules, and each of the power supply modulesbridges the high-voltage chamber and the low-voltage chamber, the powersupply module includes a high-voltage cavity, a low-voltage cavity andan isolation unit, wherein a connecting terminal of the high-voltagecavity and a connecting terminal of the low-voltage cavity arerespectively disposed corresponding to the high-voltage chamber and thelow-voltage chamber and electrically connected to the high-voltage busbar and the low-voltage bus bar respectively, and the isolation unit isconnected to one end of the high-voltage cavity and one end of thelow-voltage cavity.

It is to be understood that both the foregoing general description andthe following detailed description are exemplary and explanatory onlyand are not restrictive of the invention, as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the presentdisclosure will become more apparent from the detailed descriptions ofexemplary embodiments with reference to the drawings.

FIG. 1 is a front side stereogram of a power supply system according toan embodiment of the present disclosure;

FIG. 2 is a rear side stereogram of a power supply system according toan embodiment of the present disclosure;

FIG. 3 is a side view of a high-low voltage conversion cabinet of apower supply system according to an embodiment of the presentdisclosure;

FIG. 4 is a rear view of a power supply system according to a firstexemplary embodiment of the present disclosure;

FIG. 5 is a rear view of a power supply system according to a secondexemplary embodiment of the present disclosure;

FIG. 6 is a rear view of a power supply system according to a thirdexemplary embodiment of the present disclosure;

FIG. 7 is a rear view of a power supply system according to a fourthexemplary embodiment of the present disclosure;

FIG. 8 is an exploded view of a specific structure of the power supplymodule;

FIG. 9 is a schematic diagram of a plurality of high-low voltageconversion cabinets;

FIG. 10 is a schematic diagram in which inputs of a plurality of powersupply module are connected in series;

FIG. 11 is a schematic diagram in which inputs of a plurality of powersupply module are connected in parallel;

FIG. 12 is a schematic diagram in which outputs of a plurality of powersupply modules are connected in series;

FIG. 13 is a schematic diagram in which outputs of a plurality of powersupply modules are connected in parallel;

FIG. 14 is a side view of a high-low voltage conversion cabinet of apower supply system according to another embodiment of the presentdisclosure;

FIG. 15 is another side view of the high-low voltage conversion cabinetof the power supply system according to another embodiment of thepresent disclosure; and

FIG. 16 is a circuit diagram of the power supply module according to anembodiment of the present disclosure.

DETAILED DESCRIPTION

Exemplary embodiments will now be described more fully with reference tothe accompanying drawings. However, the exemplary embodiments may beimplemented in many forms and should not be construed as being limitedto the examples set forth herein; instead, these exemplary embodimentsare provided so that this disclosure will be thorough and complete, andthe concepts of the exemplary embodiments will be comprehensivelyconveyed to those skilled in the art. The drawings are only schematicrepresentations of the present disclosure and are not necessarily to bedrawn to scale. The same reference numerals in the drawings representthe same or similar parts, and thus their repeated description will beomitted.

Furthermore, the described features, structures, or characteristics maybe combined in one or more exemplary embodiments by using any suitablemanner. In the following description, numerous specific details are setforth to provide full understanding of the exemplary embodiments of thepresent disclosure. However, those skilled in the art should appreciatethat the technical solutions of the present disclosure may be practicedwithout one or more of the foregoing specific details, or other methods,constituent elements, steps, etc. may be adopted. In other instances,well-known structures, methods, implementations, or operations are notshown or described in detail to avoid obscuring various aspects of thepresent disclosure.

Embodiments of the present disclosure provide a power supply system,including: a high-voltage input power distribution cabinet, a high-lowvoltage conversion cabinet, and a low-voltage output and controlcabinet, wherein the high-low voltage conversion cabinet is providedwith at least one high-voltage chamber and at least one low-voltagechamber, the high-low voltage conversion cabinet is further providedwith an insulating partition between the high-voltage chamber and thelow-voltage chamber, the low-voltage chamber is provided with alow-voltage bus bar, and the high-voltage chamber is provided with ahigh-voltage bus bar; the high-low voltage conversion cabinet is furtherprovided with a plurality of power supply modules, and each of the powersupply modules bridges the high-voltage chamber and the low-voltagechamber, the power supply module includes a high-voltage cavity, alow-voltage cavity and an isolation unit, wherein the high-voltagecavity and the low-voltage cavity are respectively disposedcorresponding to the high-voltage chamber and the low-voltage chamberand electrically connected to the high-voltage bus bar and thelow-voltage bus bar respectively, and the isolation unit is connected toone end of the high-voltage cavity and one end of the low-voltage cavityoutside the high-voltage chamber and the low-voltage chamber to achievethe electrical isolation between the power supply module and theoutside. The power supply system of the embodiments improves safety byisolating the input high voltage, the output low voltage and the controllow voltage. Further, the high-voltage cavity, low-voltage cavity and acombination thereof can be used for a variety of different systemarchitectures.

Embodiments of the present disclosure further provide a power supplysystem, including: a high-voltage input power distribution cabinet, ahigh-low voltage conversion cabinet, and a low-voltage output andcontrol cabinet, wherein the high-low voltage conversion cabinet isprovided with at least one high-voltage chamber and at least onelow-voltage chamber, the high-low voltage conversion cabinet is furtherprovided with an insulating partition between the high-voltage chamberand the low-voltage chamber, the low-voltage chamber is provided with alow-voltage bus bar, and the high-voltage chamber is provided with ahigh-voltage bus bar; the high-low voltage conversion cabinet is furtherprovided with a plurality of power supply modules, and each of the powersupply modules bridges the high-voltage chamber and the low-voltagechamber, the power supply module comprises a high-voltage cavity, alow-voltage cavity and an isolation unit, wherein a connecting terminalof the high-voltage cavity and a connecting terminal of the low-voltagecavity are respectively disposed corresponding to the high-voltagechamber and the low-voltage chamber and electrically connected to thehigh-voltage bus bar and the low-voltage bus bar respectively, and theisolation unit is connected to one end of the high-voltage cavity andone end of the low-voltage cavity.

The power supply system of the present disclosure will be described indetail below with reference to FIG. 1 to FIG. 15, wherein FIG. 1 is afront side stereogram of a power supply system according to anembodiment of the present disclosure; FIG. 2 is a rear side stereogramof a power supply system according to an embodiment of the presentdisclosure; FIG. 3 is a side view of a high-low voltage conversioncabinet of a power supply system according to an embodiment of thepresent disclosure; FIG. 4 is a rear view of a power supply systemaccording to the first exemplary embodiment of the present disclosure;FIG. 5 is a rear view of a power supply system according to the secondexemplary embodiment of the present disclosure; FIG. 6 is a rear view ofa power supply system according to the third exemplary embodiment of thepresent disclosure; FIG. 7 is a rear view of a power supply systemaccording to the fourth exemplary embodiment of the present disclosure;FIG. 8 is an exploded view of the specific structure of the power supplymodule; FIG. 9 is a schematic diagram of a plurality of high-low voltageconversion cabinets; FIG. 10 is a schematic diagram in which inputs of aplurality of power supply modules are connected in series; FIG. 11 is aschematic diagram in which inputs of a plurality of power supply modulesare connected in parallel; FIG. 12 is a schematic diagram in whichoutputs of a plurality of power supply modules are connected in series;FIG. 13 is a schematic diagram in which outputs of a plurality of powersupply modules are connected in parallel; FIG. 14 is a side view of ahigh-low voltage conversion cabinet of a power supply system accordingto another embodiment of the present disclosure; FIG. 15 is another sideview of the high-low voltage conversion cabinet of the power supplysystem according to another embodiment of the present disclosure; andFIG. 16 is a circuit diagram of the power supply module according to anembodiment of the present disclosure.

As shown in FIG. 1 to FIG. 4, the power supply system includes: ahigh-voltage input power distribution cabinet 1, a high-low voltageconversion cabinet 2, and a low-voltage output and control cabinet 3,wherein the high-low voltage conversion cabinet 2 is provided with atleast one high-voltage chamber 21 and at least one low-voltage chamber22, the high-low voltage conversion cabinet 2 is further provided withan insulating partition 23 between the high-voltage chamber 21 and thelow-voltage chamber 22, the low-voltage chamber 22 may be provided witha low-voltage bus bar (not shown in the figure), and the high-voltagechamber 21 is provided with a high-voltage bus bar (not shown in thefigure), so as to separate the high-voltage bus bar from the low voltagebus bar; the high-low voltage conversion cabinet is further providedwith a plurality of power supply modules 24, and each of the powersupply modules 24 bridges one high-voltage chamber 21 and onelow-voltage chamber 22, the power supply module includes a high-voltagecavity 241, a low-voltage cavity 242 and an isolation unit 243, whereinthe high-voltage cavity 241 and the low-voltage cavity 242 arerespectively disposed corresponding to the high-voltage chamber 21 andthe low-voltage chamber 22 and electrically connected to thehigh-voltage bus bar and the low-voltage bus bar respectively, and theisolation unit 243 is connected to one end of the high-voltage cavity241 and one end of the low-voltage cavity 242 to achieve the electricalisolation between the power supply modules 24 and the outside, that is,it may achieve the electrical isolation between the power supply modules24 and the outside of the high-low voltage conversion cabinet 2 and eventhe outside of the power supply system.

In another embodiment, as shown in FIG. 14 to FIG. 15, the power supplysystem includes: a high-voltage input power distribution cabinet 1, ahigh-low voltage conversion cabinet 2′, and a low-voltage output andcontrol cabinet 3, wherein the high-low voltage conversion cabinet 2′ isprovided with at least one high-voltage chamber 21′ and at least onelow-voltage chamber 22′, the high-low voltage conversion cabinet 2′ isfurther provided with an insulating partition 23′ between thehigh-voltage chamber 21′ and the low-voltage chamber 22′, thelow-voltage chamber may be provided with a low-voltage bus bar (notshown in the figure), and the high-voltage chamber 21′ is provided witha high-voltage bus bar (not shown in the figure); the high-low voltageconversion cabinet 2′ is further provided with a plurality of powersupply modules 24′, and each of the power supply modules 24′ bridges onehigh-voltage chamber 21′ and one low-voltage chamber 22′, the powersupply module includes a high-voltage cavity 241′, a low-voltage cavity242′ and an isolation unit 243′, wherein a connecting terminal (i.e., ahigh-voltage terminal) 2412 of the high-voltage cavity 241′ and aconnecting terminal (i.e., a low-voltage terminal) 2424 of thelow-voltage cavity 242′ are respectively disposed corresponding to thehigh-voltage chamber 21′ and the low-voltage chamber 22′ andelectrically connected to the high-voltage bus bar and the low-voltagebus bar respectively, and the isolation unit 243′ is connected to oneend of the high-voltage cavity 241′ and one end of the low-voltagecavity 242′ to achieve the electrical isolation between the power supplymodules 24′ and the outside, that is, it may achieve the electricalisolation between the power supply modules 24′ and the outside of thehigh-low voltage conversion cabinet 2′ and even the outside of the powersupply system.

As shown in FIG. 14 and FIG. 15, the connecting terminal 2412 of thehigh-voltage cavity 241′ is disposed corresponding to the high-voltagechamber 21′, and the connecting terminal 2424 of the low-voltage cavity242′ is disposed corresponding to the low-voltage chamber 22′. It isunnecessary to align the high-voltage cavity 241′ with the high-voltagechamber 21′, and the high-voltage cavity 241′ and the high-voltagechamber 21′ may be disposed in a staggered manner. Similarly, it isunnecessary to align the low-voltage cavity 242′ with the low-voltagechamber 22′, and the low-voltage cavity 242′ and the low-voltage chamber22′ may be disposed in a staggered manner. In this way, the insulatingpartition 23′ can be moved up and down according to actual needs, andthe sizes of the high-voltage chamber 21′ and the low-voltage chamber22′ can be flexibly changed according to actual needs.

Further, the high-voltage input power distribution cabinet 1 may beprovided with a fuse 11, a reactor 12 and a lightning rod 13; thelow-voltage output and control cabinet 3 may be provided with an outputbus bar 31 and a circuit breaker 32, and the output bus bar 31 may beelectrically connected to the low voltage bus bar for external output ofthe cabinet.

It should be specially stated here that the high-voltage chamber and thelow-voltage chamber may be one or more than one. In the case that thereare only one high-voltage chamber and one low-voltage chamber, onehigh-voltage chamber may correspond to a plurality of high-voltagecavities, and one low-voltage chamber may correspond to a plurality oflow-voltage cavities, that is, one group of the high-voltage chamber andthe low-voltage chamber corresponds to the high-voltage cavities and thelow-voltage cavities of a plurality of the power supply modules. In thecase that there are a plurality of the high-voltage chambers and thelow-voltage chambers, the number of the power supply modules may be thesame as that of the high-voltage/low-voltage chambers, and they areconnected in a one-to-one correspondence, but the present disclosure isnot limited thereto. The number of the power supply modules may begreater than the number of the high-voltage and low-voltage chambers,and one high-voltage/low-voltage chamber may correspond to multiplehigh-voltage/low-voltage cavities (that is, they correspond to multiplepower supply modules).

The power supply system according to an embodiment of the presentdisclosure can improve safety by isolating the input high voltage, theoutput low voltage and the control low voltage. Meanwhile, theadditional protection of the low voltage portion is reduced, so that thenumber and types of parts are reduced, in addition, the electricclearance and the creepage distance between the high-voltage chamber andthe low-voltage chamber, and the electric clearance and the creepagedistance between the high-voltage cavity and the low-voltage cavity arereduced, so that the size and weight of cabinet body are reduced.Further, the high-voltage cavity, the low-voltage cavity and acombination thereof may be used for a variety of different systemarchitectures.

According to an exemplary embodiment of the present disclosure, thereare a plurality of the high-voltage chambers, a plurality of thelow-voltage chambers, and a plurality of the insulating partitions. Thehigh-voltage chambers and the low-voltage chambers may be alternatelyarranged in a vertical direction, as shown in FIG. 1 to FIG. 4. In thevertical direction, the high-voltage chambers and the low-voltagechambers are alternately arranged, and the insulating partitions areprovided between the high-voltage chambers and low-voltage chambers.Each group of the high-voltage chamber and the low-voltage chamber maycorrespond to the high-voltage cavities and the low-voltage cavities ofa plurality of power supply modules. The high-voltage chamber and thelow-voltage chamber may be a horizontal rectangular parallelepiped asshown in FIG. 1, high-voltage bus bars and low-voltage bus bars withlong stipe shapes may be respectively arranged in the high-voltagechamber and the low-voltage chamber, and the high-voltage bus bars andthe low-voltage bus bars may be arranged correspondingly andhorizontally. The high-voltage cavities and the low-voltage cavities ofthe plurality of power supply modules may respectively andcorrespondingly connect to the high-voltage bus bars and the low-voltagebus bars, so as to realize multiple output connection modes such asparallel connection, series connection, series-parallel connection,etc., but the present disclosure is not limited thereto.

According to an exemplary embodiment of the present disclosure, thehigh-voltage input power distribution cabinet, the high-low voltageconversion cabinet, and the low voltage output and the control cabinetare sequentially arranged in a horizontal direction, as shown in FIG. 4and FIG. 5, wherein white arrows indicate the distribution of the inputhigh voltage line L₁, the white arrows in the portion of the high-lowvoltage conversion cabinet virtualizing the high voltage bus bars; blackarrows indicate the distribution of the output low voltage line L₃, theblack arrows virtualizing the low voltage bus bar in the portion of thehigh-low voltage conversion cabinet; and arrows with oblique linesindicate the distribution of the control line L₂.

It should be specially noted that, in order to more clearly show thedistribution of the input high voltage line L₁, the control line L₂ andthe output low voltage line L₃, the specific structures and componentsof the high-voltage input power distribution cabinet and the low-voltageoutput and control cabinet are omitted in FIGS. 4 to 7 (not shown in thedrawings).

In FIG. 4, the cabinet bodies of the high-voltage input powerdistribution cabinet 1, the high-low voltage conversion cabinet 2 andthe low-voltage output and control cabinet 3 are arranged in thehorizontal direction, the high-voltage power inputted into thehigh-voltage input power distribution cabinet 1 is transmitted to thepower supply modules along the high-voltage bus bars horizontallyarranged, and is transferred to the low-voltage output and controlcabinet through the low voltage bus bars arranged horizontally afterbeing converted into low-voltage power via the power supply modules. Itis simple for wiring, and it is convenient to achieve the isolationbetween the high voltage and low voltage in each cabinet body.

According to an exemplary embodiment of the present disclosure, thereare provided with a plurality of the high-voltage chambers, a pluralityof the low-voltage chambers, and a plurality of the insulatingpartitions, and the high-voltage chambers and the low-voltage chambersare alternately arranged in a horizontal direction, as shown in FIG. 5.

In FIG. 5, the cabinet bodies of the high-voltage input powerdistribution cabinet 1, the high-low voltage conversion cabinet 2 andthe low-voltage output and control cabinet 3 are horizontallydistributed, but the corresponding high-voltage chambers and low-voltagechambers are alternately arranged in a horizontal direction. Thehigh-voltage chamber and the low-voltage chamber may be a verticalrectangular parallelepiped as shown in FIG. 5, and high-voltage bus barsand low-voltage bus bars with long stipe shapes may be respectivelyarranged in the high-voltage chamber and the low-voltage chamber. Thehigh-voltage power inputted into the high-voltage input powerdistribution cabinet 1 is transmitted to the power supply modules alongthe high-voltage bus bars vertically arranged, and is transferred to thelow voltage output and control cabinet through the low-voltage bus barsarranged vertically after being converted into low-voltage power via thepower supply modules. In this wiring method, multiple turns arerequired, so as to achieve the isolation of the high voltage and lowvoltage in each cabinet body.

In an embodiment, the high-low voltage conversion part, the high-voltageinput part, and the low-voltage output and control part may be made asseparate cabinet bodies to be isolated from each other, or may be placedin the same cabinet body and separated by partitions. In the high-lowvoltage conversion cabinet, the power supply module is verticallyexpanded, and the partitions are vertically installed to form thehigh-voltage/low-voltage chamber, wherein the high-voltage chambers andlow-voltage chambers are arranged at intervals. The partition isolatesthe input high voltage, the output low voltage and the control lowvoltage, which reduces the electric clearance and the creepage distancebetween the high-voltage chamber and the low-voltage chamber and theclearance and the creepage distance between the high-voltage cavitiesand the low-voltage cavities, thereby reducing the size and weight ofthe cabinet bodies and types of the components.

According to an exemplary embodiment of the present disclosure, thehigh-voltage input power distribution cabinet, the high-low voltageconversion cabinet, and the low-voltage output and control cabinet aresequentially arranged in a vertical direction, as shown in FIG. 6,wherein white arrows indicates the distribution of the input highvoltage line L₁, and the white arrows in the portion of the high-lowvoltage conversion cabinet virtualize the high voltage bus bar; blackarrows indicates the distribution of the output low voltage line L₃, andthe black arrows in the portion of the high-low voltage conversioncabinet virtualize the low voltage bus bar; and arrows with obliquelines indicate the distribution of the control line L₂.

In FIG. 6, the cabinet bodies of the high-voltage input powerdistribution cabinet 1, the high-low voltage conversion cabinet 2, andthe low-voltage output and control cabinet 3 are arranged in a verticaldirection, but the corresponding high-voltage chambers and low-voltagechambers are alternately arranged in a horizontal direction. Thehigh-voltage chambers and the low-voltage chambers may respectively be aplurality of rectangular parallelepiped arranged in a vertical directionas shown in FIG. 6, and the elongated high voltage bus bar and the lowvoltage bus bar may be respectively arranged in the high-voltage chamberand the low-voltage chamber. The high-voltage power inputted into thehigh-voltage input power distribution cabinet 1 is transmitted to thepower supply modules along the vertically arranged high-voltage bus, andis converted into the low-voltage power by the power supply modules, andthen is transmitted to the low-voltage output and control cabinet viathe low-voltage bus bar that is vertically arranged. The wiring methodis simple, and it is convenient to realize the isolation of high and lowvoltage in each cabinet body.

In an embodiment, the high-low conversion part, the high-voltage inputpart, and the low-voltage output and control part may be respectivelymade as a separate cabinet body to be isolated from each other or may beseparated by partitions in the same cabinet body. In the high-lowvoltage conversion cabinet, the power supply modules may be expandedaccording to requirements, and the partitions are vertically installedto form high-voltage/low-voltage chamber, wherein the high-voltagechambers and low-voltage chambers are arranged at intervals. Thepartition isolates the input high voltage, the output low voltage andthe control low voltage, which may reduce the clearance and creepagedistance between the high-voltage chamber and the low-voltage chamberand the clearance and creepage distance between the high-voltagecavities and the low-voltage cavities, thereby reducing the size andweight of the cabinet body and types of the parts.

According to an exemplary embodiment of the present disclosure, thehigh-voltage input power distribution cabinet and the high-low voltageconversion cabinet are adjacent in a horizontal direction, and thehigh-low voltage conversion cabinet is adjacent to the low-voltageoutput and the control cabinet in a vertical direction. As shown in FIG.7, white arrows indicate the distribution of the input high voltage lineL₁, and the white arrows in the portion of the high-low voltageconversion cabinet virtualize the high voltage bus bar; black arrowsindicate the distribution of the output low voltage line L₃, and theblack arrows in the portion of the high-low voltage conversion cabinetvirtualize the low voltage bus bar; and arrows with oblique linesindicate the distribution of the control line L₂.

In FIG. 7, the high-voltage input power distribution cabinet 1 isadjacent to the high-low voltage conversion cabinet 2 in a horizontaldirection, the high-low voltage conversion cabinet 2 and the low-voltageoutput and control cabinet 3 are adjacent in a vertical direction, andthe high-voltage chamber and the low-voltage chamber are alternatelyarranged in horizontal directions. The high-voltage chamber and thelow-voltage chamber may be a plurality of rectangular parallelepipedsarranged in a vertical direction as shown in FIG. 7, and high voltagebus bars and low voltage bus bars with stripe shapes may be respectivelyarranged in the high-voltage chamber and the low-voltage chamber. Thehigh-voltage power inputted into the high-voltage input powerdistribution cabinet 1 is transmitted to the power supply module alongthe high voltage bus bar vertically arranged, and is transferred to thelow voltage output and control cabinet through the low voltage bus bararranged vertically after being converted into low-voltage power via thepower supply module. The wiring method requires multiple turns toachieve the isolation of the high voltage and low voltage in eachcabinet body. The overall structure of the power supply system of thepresent exemplary embodiment is more compact, and the advantages areeven more obvious in certain specific scenarios (such as the case inwhich the size in a certain dimension is strictly limited and required,or the case in which the width is strictly limited and required).

In an embodiment, at both sides of the high-low voltage conversion part,there are respectively a high-voltage power distribution part and alow-voltage output and control part. The high-voltage power distributionpart and the low-voltage output and control part are distributed in thevertical direction. The high-low voltage conversion part, thehigh-voltage input part and the low-voltage output and control part maybe respectively made as a separate cabinet body to be isolated from eachother or may be separated by partitions in the same cabinet body. In thehigh-low voltage conversion cabinet, the power supply module isvertically expanded, and the partitions are vertically installed to formhigh-voltage chamber and low-voltage chamber, the high-voltage chamberand low-voltage chamber being arranged at intervals. The partitionisolates the input high voltage, the output low voltage and the controllow voltage, which may reduce the clearance and creepage distancebetween the high-voltage chamber and the low-voltage chamber and theclearance and creepage distance between the high-voltage cavities andthe low-voltage cavities, thereby reducing the size and weight of thecabinet bodies and types of the components.

According to an exemplary embodiment of the present disclosure, thelow-voltage chamber is also provided with a low-voltage control line(not shown).

According to an exemplary embodiment of the present disclosure, thehigh-voltage input power distribution cabinet, the high-low voltageconversion cabinet, and the low voltage output and control cabinet eachadopts a separately isolated cabinet.

According to an exemplary embodiment of the present disclosure, thehigh-voltage input power distribution cabinet, the high-low voltageconversion cabinet, and the low voltage output and control cabinet aredisposed in the same cabinet body and are separated by partitions.

According to an exemplary embodiment of the present disclosure, ahigh-voltage unit is disposed in a high-voltage cavity of the powersupply module, and an isolation transformer and a low-voltage unit aredisposed in the low-voltage cavity of the power supply module.

Specifically, as shown in FIG. 8, the high-voltage unit 2411 is disposedin the high-voltage cavity 241, and the isolation transformer 2421 andthe low-voltage unit 2422 are disposed in the low-voltage cavity 242.The isolation cavity 2432 is disposed at one end of the low-voltagecavity and one end of the high-voltage cavity, for example, outside thehigh-voltage cavity and the low-voltage cavity of the cabinet body, forisolating the high-voltage portion from the operator directly in frontof the cabinet body, so as to avoid damage to maintenance personnel dueto arc discharge during live maintenance. A control unit 33 may bedisposed in the low-voltage cavity of the power supply module. Thehigh-voltage unit 2411 may include primary circuit of conversioncircuit, and the low-voltage unit 2422 may include secondary circuit ofconversion circuit, but the present disclosure is not limited thereto.

FIG. 16 is a circuit diagram of the power supply module according to anembodiment of the present disclosure. As shown in FIG. 16, thehigh-voltage unit 2411 is connected to the low-voltage unit 2422 throughthe isolation transformer 2421.

According to an exemplary embodiment of the present disclosure, there isprovided with a fan (not shown) disposed in the isolation unit.

According to an exemplary embodiment of the present disclosure, there isone fan disposed in a position corresponding to the low-voltage cavityin the isolation unit.

According to an exemplary embodiment of the present disclosure, thereare two fans, which are respectively disposed in positions correspondingto the high-voltage cavity and the low-voltage cavity in the isolationunit.

According to an exemplary embodiment of the present disclosure, the fandisposed in the position corresponding to the high-voltage cavity in theisolation unit is provided with an arc protection mechanism 2431. Thearc protection mechanism 2431 may be a ventilable isolation structuresuch as a grounded metal mesh/grid, louver, etc., but the disclosure isnot limited thereto.

The two schemes of the settings of the above-mentioned fans maycorrespond to power supply modules of different power levels and thesame voltage level. For example, the scheme of two fans corresponds to apower supply module of a relatively high power level, and the scheme ofone fan corresponds to a power supply module of a relatively low powerlevel. However, the present disclosure is not limited thereto. Thesolutions of arc protection mechanism and fan may be disclosed as inFIG. 8.

According to an exemplary embodiment of the present disclosure, theremay be one or more high-low voltage conversion cabinets. Theinputs/outputs of the high-low voltage conversion cabinets may beconnected in series or in parallel. The inputs of the high-low voltageconversion cabinets are connected in series to meet different highvoltage inputs, such as 4˜22KV, as shown in FIG. 9. The outputs of thehigh-low voltage conversion cabinets are connected in parallel to meetthe outputs of different power levels. By setting variety of connectionsof different numbers of power supply modules, high-voltage bus bars andlow-voltage bus bars, the requirements of different voltage inputs andpower outputs can be met, and different occasions can be flexiblyapplied.

According to an exemplary embodiment of the present disclosure, theconnecting terminal of the high-voltage cavity is an AC inputseries-parallel terminal 2442. As shown in FIG. 10 and FIG. 11, the ACinput series-parallel terminals 2442 of different power supply modulesmay be selectively connected in series, in parallel, in series-parallel,etc. through the input serial bus bar 2443 and the input parallel busbar 2444, and then they are further connected to the correspondinghigh-voltage bus bar through the input bus bar 2441, wherein the inputserial bus bar 2443 and the input parallel bus bar 2444 may be disposedin the high-voltage chamber. For example, when needing to be connectedin series, the AC input serial-parallel terminals 2442 of differentpower supply modules may be connected in series through the input serialbus bars 2443, and then are connected to the corresponding high-voltagebus bars through the input bus bar 2441; and when needing to beconnected in parallel, the AC input serial-parallel terminals 2442 ofdifferent power supply modules may be connected in parallel through theinput parallel bus bars 2444, and then are connected to thecorresponding high-voltage bus bar through the input bus bar 2441. Inone embodiment, the input parallel bus bar 2444 may be implementeddirectly by the high-voltage bus bar.

According to an exemplary embodiment of the present disclosure, theconnecting terminal of the low-voltage cavity is a DC outputserial-parallel terminal 2451. As shown in FIG. 12 and FIG. 13, the DCoutput series-parallel terminals 2451 of different power supply modulesmay be selectively connected in series, in parallel, in series-parallel,etc. through the output parallel bus bar 2452 and the output serial busbar 2453, and then are connected to the corresponding low-voltage busbars. For example, when needing to be connected in series, the DC outputserial-parallel terminals 2451 of different power supply modules may beconnected in series through the output series bus bars 2453, and thenare connected to the corresponding low-voltage bus bars; when needing tobe connected in parallel, the DC output series-parallel terminals 2451of different power supply modules may be connected in parallel throughthe output parallel bus bars 2452, and then are connected to thecorresponding low-voltage bus bar; and when more output power and largeroutput voltage are required at the same time, the DC outputseries-parallel terminals 2451 of different power supply modules may beconnected in series through the output series bus bar 2453, thenconnected in parallel through the output parallel bus bars 2452, andthen connected to the corresponding low-voltage bus bars. In oneembodiment, the output parallel bus bar 2452 may be implemented directlyby the low-voltage bus bar.

Taking a power supply module with a DC output voltage of 400V as anexample, by directly connecting the outputs of the multiple power supplymodules in parallel, the voltage output of DC400V can be realized; andby connecting the outputs of the multiple power supply module in seriesfirstly and then connected in parallel, the voltage output of DC800V canbe realized.

According to an exemplary embodiment of the present disclosure, an inputof the power supply module is an AC input, and an output thereof is a DCoutput.

From the above detailed description, those skilled in the art willreadily appreciate that a power supply system according to theembodiments of the present disclosure has one or more of the followingadvantages.

According to some exemplary embodiments of the present disclosure,safety is improved by isolating the input high voltage, the output lowvoltage and the control low voltage.

According to some exemplary embodiments of the present disclosure, thelow-voltage portion does not require additional protection, therebyreducing the number and types of components.

According to some exemplary embodiments of the present disclosure, theclearance and creepage distance between the high-voltage chambers andlow-voltage chambers and the clearance and creepage distance between thehigh-voltage cavities and low-voltage cavities are reduced, and thus thesizes and weights of the cabinet bodies are reduced.

According to some further exemplary embodiments of the presentdisclosure, the high-voltage cavity, the low-voltage cavity and acombination thereof may meet a variety of different systemarchitectures.

Other embodiments of the present disclosure will be apparent to thoseskilled in the art from consideration of the specification and practiceof the present disclosure disclosed here. This application is intendedto cover any variations, uses, or adaptations of the present disclosurefollowing the general principles thereof and including such departuresfrom the present disclosure as come within known or customary practicein the art. It is intended that the specification and examples beconsidered as exemplary only, with a true scope and spirit of thepresent disclosure being indicated by the following claims.

It will be appreciated that the present disclosure is not limited to theexact construction that has been described above and illustrated in theaccompanying drawings, and that various modifications and changes can bemade without departing from the scope thereof. It is intended that thescope of the present disclosure only be limited by the appended claims.

What is claimed is:
 1. A power supply system, comprising: a high-voltageinput power distribution cabinet, a high-low voltage conversion cabinet,and a low-voltage output and control cabinet, wherein, the high-lowvoltage conversion cabinet is provided with at least one high-voltagechamber and at least one low-voltage chamber, the high-low voltageconversion cabinet is further provided with an insulating partitionbetween the high-voltage chamber and the low-voltage chamber, thelow-voltage chamber is provided with a low-voltage bus bar, and thehigh-voltage chamber is provided with a high-voltage bus bar; thehigh-low voltage conversion cabinet is further provided with a pluralityof power supply modules, and each of the power supply modules bridgesthe high-voltage chamber and the low-voltage chamber, the power supplymodule comprises a high-voltage cavity, a low-voltage cavity and anisolation unit, wherein a connecting terminal of the high-voltage cavityand a connecting terminal of the low-voltage cavity are respectivelydisposed corresponding to the high-voltage chamber and the low-voltagechamber and electrically connected to the high-voltage bus bar and thelow-voltage bus bar respectively, and the isolation unit is connected toone end of the high-voltage cavity and one end of the low-voltagecavity.
 2. The power supply system according to claim 1, wherein, thepower supply system comprises a plurality of the high-voltage chambers,a plurality of the low-voltage chambers, and a plurality of theinsulating partitions, and the high-voltage chambers and the low-voltagechambers are alternately arranged in a vertical direction.
 3. The powersupply system according to claim 2, wherein, the high-voltage inputpower distribution cabinet, the high-low voltage conversion cabinet, andthe low-voltage output and control cabinet are sequentially arranged ina horizontal direction.
 4. The power supply system according to claim 1,wherein, the power supply system comprises a plurality of thehigh-voltage chambers, a plurality of the low-voltage chambers, and aplurality of the insulating partitions, and the high-voltage chambersand the low-voltage chambers are alternately arranged in a horizontaldirection.
 5. The power supply system according to claim 4, wherein, thehigh-voltage input power distribution cabinet, the high-low voltageconversion cabinet, and the low-voltage output and control cabinet aresequentially arranged in a vertical direction.
 6. The power supplysystem according to claim 4, wherein, the high-voltage input powerdistribution cabinet is adjacent to the high-low voltage conversioncabinet in the horizontal direction, and the high-low voltage conversioncabinet is adjacent to the low-voltage output and control cabinet in avertical direction.
 7. The power supply system according to claim 1,wherein, the low-voltage chamber is further provided with a low-voltagecontrol line.
 8. The power supply system according to claim 1, wherein,the high-voltage input power distribution cabinet, the high-low voltageconversion cabinet, and the low-voltage output and control cabinet adopta separately isolated cabinet body, respectively.
 9. The power supplysystem according to claim 1, the high-voltage input power distributioncabinet, the high-low voltage conversion cabinet, and the low-voltageoutput and control cabinet are disposed only in a cabinet body and areseparated by a partition.
 10. The power supply system according to claim1, wherein, the high-voltage cavity is provided with a high-voltageunit, and the low-voltage cavity is provided with an isolationtransformer and a low-voltage unit.
 11. The power supply systemaccording to claim 1, wherein, the isolation unit is provided with afan.
 12. The power supply system according to claim 11, wherein, theisolation unit is provided with only one fan, which is disposed at aposition corresponding to the low-voltage cavity in the isolation unit.13. The power supply system according to claim 11, wherein, theisolation unit is provided with two fans, which are respectivelydisposed at positions corresponding to the high-voltage cavity and thelow-voltage cavity in the isolation unit.
 14. The power supply systemaccording to claim 13, wherein, one of the fans disposed at the positioncorresponding to the high-voltage cavity in the isolation unit isprovided with an arc protection mechanism.
 15. The power supply systemaccording to claim 1, wherein, the connecting terminal of thehigh-voltage cavity is an AC input terminal, and the AC input terminalsof the plurality of power supply modules are selectively connected inseries through an input series bus bar disposed in the high-voltagecavity or in parallel through an input parallel bus bar disposed in thehigh-voltage cavity.
 16. The power supply system according to claim 1,wherein, the connecting terminal of the low-voltage cavity is a DCoutput terminal, and the DC output terminals of the plurality of powersupply modules are selectively connected in series through an outputseries bus bar disposed in the low-voltage or in parallel through anoutput parallel bus bar disposed in the low-voltage cavity.
 17. Thepower supply system according to claim 1, wherein, the power supplymodule is provided with an AC input and a DC output.